<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        // 1.十进制转N进制（2<=N<=16）

        function dec2hex(num) {
            if (typeof num !== 'undefined') {
                console.log(Number(num).toString(16));
                console.log(Number(num).toString(8));
                console.log(Number(num).toString(2));

            }

        }
        let num = 32;
        dec2hex(num);
    </script>
</body>

</html>